Joseph poole



(N o Model.)

J. POOLE. WIRE GAGE.

No. 513,596. Patented Jan. so, 1894.

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JOSEPH POOLE, OF MANCHESTER, ENGLAND.

VVVlRE-GAGE.

SPC'FCATION forming part of Letters gPatent No. 513,596, dated January30, 1894. Application led January 9, 1893. Serial No. 457,855. (Nomodel.) Patented in England November 2, 1892, No. 19,697.

To all whom it may concern.'

Beit known that I, JOSEPH POOLE, a subject of the Queen of GreatBritainandIreland, residing at Moss Side, Manchester, in the county ofLancaster,V lngland, have invented certain new and useful Improvementsin Wire-Gages, (for which I obtained Letters Patent in Great Britain onthe 2d day of November, 1892, No. 19,697,) of which the following is aspecification.

This invention relates to improvements in gages for wire, sheet metaland other articles, and it has for its objects to provide a simpledevice that may be used as an ordinary gage, but it is especiallydesigned for gaging electric wires, being so constructed as to indicatethe resistance of given length and diameter of wire, as more fullyhereinafter set forth. The above-mentioned objects are attained by themeans illustrated in the accompanying drawings, in which-M#` l Figure 1,represents a view in elevation, showing the front and rear faces of thegage. Fig. 2 represents an edge view of the same. Figs. 3, 4: and 5represent modifications of my improved gage.

Referring to the drawings, by letter, A indicates a disk placedeccentrically within a ring B, having a crescent-shaped space O betweenthe two in which the wire to be gaged is placed. The space C is widestat one end of a diameter of the disk A and reaches its narrowest part ator about the other end. At the widest part of the space, the ring Bispreferably divided as at D to admit the passage of a wire which may thusbe gaged at any part of its length. The wire being admitted is passedalong the space C toward one of its ends as far as possible when themarks opposite its stopping point indicate its diameter.

In the gage illustrated in Fig. 1, which is especially designed for theuse of electrical engineers, the gage is so graduated that if the wireis moved in one direction along the space O, the spot at which it stopswould indcate its diameter in millimeters, its sectional area inthousandths of a square inch, and its safety limit for an electriccurrent on one face of the gage; and the number of yards per ohm,and theresistance in ohms per hun-` dred feet, or other convenient length onthe other. Should the wire be moved toward the other end of the space Othe gage would indicate its diameter in thousandths of an inch or otherunit, and its number accordin gto the standard wire gage on one face andon the other its weight per thousand feet and its electrical resistanceper mile. The circular inner disk is secured to the outer ring by abracket or plate E.

In the modification shown in Fig. 3 of the drawings, the gage consistsof a multiplicity of crescent-shaped plates B mounted on a bracket Ehaving crescent-shaped gage spaces between them.

In the modification shown in Fig. 4, the disk B is not circular but isturned off at one side, the original curve being indicated by dottedlines. The opening D both in this and its equivalent forms may have itsopposite faces approaching each other so as to be of different widths atthe two ends.

In the modification shown in Fig. 5 is illustrated a gage for measuringsheets as well as wires. This consists of two parts, one G being curvedand the other, I-l, straight. The straight part of the gage may beconveniently marked in inches on one side and in the metric system onthe other. The outside straight edge of the part G may also be markedwith convenient scales or measures and is perfectly parallel with theedge of the part H. The curved edge of the part Gf may also be suitIably marked. The two parts are secured tofgether, as before, by abracket, E.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to beperformed, I declare thatwhat I claim is- 1. A wire, string or similar gage characterized by atapering channel formed by the eccentric edges of adisk and a ringconstructed and arranged substantially as hereinbefore described and asillustrated by the accompanying drawings. i

2. In a wire, string or similar gage having a tapered channel formed bythe opposed eccentric curves of a disk and a ring, an openfing formedthrough the ring at or about the widest part of the tapered channel toadmit of the passage of the wire string or other anticle substantiallyas hereinbefore described and as illustrated by the accompanyingdrawings.

A wire string or similar gage having a tapered channel formed by theopposed eccentric curves of a disk and ring and an opening through thering at or about the widest part of the tapered channel, forming theopening with inclined faces so as to act as a. gage for one or morethicknesses of wire string or similar articles substantially asdescribed and as illustrated by the accompanying drawings.

4. A gage for sheet metal, Wire or similar articles having a taperedpassage one side of which is formed or bounded by the curved edge of asegment of a dis-k or ring substantially as described and as illustratedby the accompanying drawings.

5. A sheet metal, wire, string or similar gage having a tapered channelone or both of the sides of which are formed or bounded by curves andbeing impressed engraved or otherwise marked to give informationadditional to the gage of the article being measured, substantially ashereinbefore described and as illustrated by the accompanying drawings.

6. A sheet metal, wire, string or similar gage formed With a taperingchannel one or both sides of which is or are formed or bound- .ed bycurves substantially as hereinbefore described and as illustrated by theaccompanying drawings.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 16th day of December, 1892.

JOSEPH POOLE.

Witnesses:

GEORGE WILLIAM RowE, WILLIAM E. HEYs.

